For more details see Twilight of a New Era (1914-1964).
Europe in 1914
1914[]
- Ongoing events
- Mexican Revolution
- 21 April - Occupation of Veracruz (Mexico) by the US.
- 28 June - Assassination attempt on Archduke Franz Ferdinand
- 7 July – Austria-Hungary convenes a Council of Ministers. Decides to give Serbia a warning of its support of anti-Austrian and pan-slavism propaganda.
- 15 August - Inauguration of Canal of Panama (OTL)
- 21-22 August - Envoys of Austria-Hungary and Russian Empire meet in Krakow. It is agreed that Austria-Hungary will not take military actions (or preventive war) on any country of the Balkans, in exchange Russia will accept the integration of Bosnia-Herzegovina into the empire provided the rights of the minorities are guaranteed. Two secret treaties are signed: One for a non-aggression pact between Austria-Hungary and Russia, and a another treaty for Austria-Hungary to declare war on the Ottoman Empire if it were to attack Russia.
- 23 November - U.S. withdrawal of Veracruz (Mexico) (OTL)
- September - Palace coup in Serbia. Primer Minister Pasic replaced by military cabinet backed by Prince Alexander.
- October - Beginning of the entente between Austria-Hungary, France and the UK. Agrees upon a guarantee from Austria-Hungary for no military actions (or preventive war) against any country of the Balkans (De facto break of alliance with Germany).
- Government of Ireland (Home Rule) Act, approved by the British Parliament.
1915[]
- Ongoing events
- Mexican Revolution
- Beginning of World War I
- National Protection War in China
- 18 January – Twenty-One Demands from Japan to China are made (OTL)
- February - Emperor of Austria-Hungary Franz Josef dies, and coronation of Franz Ferdinand. Speech from the throne to the Diets of Austria (Vienna) and Hungary (Budapest) announces major reforms for the Austrian-Hungarian Dual Monarchy.
- 20 February to 4 December - Panama-Pacific International Exposition (PPIE) World's Fair in San Francisco, California (OTL)
- 19 March - Pluto is photographed for the first time but is not then classified as a planet (OTL)
- March to October – The 1915 The Locust Plague breaks out in Palestine (OTL)
- March - Diet of Austria votes on starting talks on reform for the Empire and invites the diet of Hungary to do the same. Meeting between delegates of Austria and Hungary. Representatives of Bohemia, Slovakia, Croatia, Transylvania, Galicia and Slovenia joined the meeting on invitation of the Emperor-King. Deadlock because of refusal of Hungarians to divide lands of the Crown of Saint Stephen (Kingdom of Hungary) and give full autonomy to Croatia and other nationalities.
- April - Diet of Hungary declares independence. Start of riots in Transylvania and Croatia that spreads to other parts of the Kingdom of Hungary. Hungarian army called to squash them. Start of Hungarian Civil War. The Emperor orders the Common Army to re-establish order and Imperial control. Mutiny in the Hungarian Army between royalists and secessionists.
- May - Secessionist Hungarian Soldiers’ territory is reduced to the immediate area around Budapest
- May - Serbia declares war on Austria-Hungary and proceeds to occupy Bosnia and Herzegovina. Austria-Hungary declares war on Serbia.
- World War I starts.
- 3 May - Suspension of the application of Government of Ireland (Home Rule) Act until the end of the war.
- 15 May - Argentina, Brazil and Chile sign the treaty that creates the ABC Pact, the future South Alliance (OTL)
- June - National Councils of Bohemia, Slovakia, Croatia, Transylvania; Polish Galicia, Ukrainian Galicia; Vojvodina-Banat, Slovenia and the Italian zone formed and control zones of their nationalities.
- June - Emperor-King decrees it assumes direct control of Hungary and introduces universal suffrage on lands of the Kingdom of Hungary and full autonomy to nationalities within the Empire. Other decrees end the process of Magyarization.
- June - Compromise of the National Councils to stay within the Crown of Habsburg if an assembly is called to reform the Empire on the base of the March meetings.
- June - (end of Hungarian Civil War) Capitulation of Budapest and designation of military governor and provisional Government.
- 28 July - United States occupation of Haiti (OTL)
- 31 October - Pleasant Valley earthquake (1915) OTL
- 12 December – Chinese president Yuan Shikai declares himself Emperor (OTL)
1916[]
- Ongoing events
- Mexican Revolution
- World War I
- End of National Protection War in China
- January - Proclamation of the Second Republic of China in Nanjing.
- January - The National Councils, the Austrian Diet and the Provisional Council and Government of Hungary send deputies to the Conference on the Organization of Austria-Hungary
- 14 January - Zuiderzeevloed hits the Netherlands. North Sea storm that floods the lowlands and kills 10,000 people (OTL)
- 22 March – The last Emperor of China, Yuan Shikai, abdicates the throne and the Republic of China is restored (OTL)
- 15 May - United States occupies the Dominican Republic
- 29 August – The United States passes the Philippine Autonomy Act (Establishes the Commonwealth of the Philippines) (modified OTL)
- 12 October – Hipólito Yrigoyen is elected President of Argentina (OTL)
- 7 November - Wilson reelected as President of the USA (OTL)
- November - Inauguration of provisional State Governments (State Councils) that will call for elections as soon as the War ends.
1917[]
- Ongoing events
- Mexican Revolution
- World War I
- Arab Revolt
- 25 January The Danish West Indies is sold to the United States for $25 million (OTL)
- 5 February – The constitution of Mexico is adopted (OTL)
- March - Democrat Woodrow Wilson is sworn a second term as President of the United States.
- May - The US establishes the Commonwealths of Haiti and Dominica (ex-Dominican Republic)
- June - Declaration of the Federal State of Austria-Hungary and draft of territorial organization approved by the Conference on the Organization of Austria-Hungary. The Conference votes to rename itself the Federal Parliament.
- November - Approval of the territorial organization by the National Councils and the Federal Parliament (Austria-Hungary).
- September - The Federal Parliament votes for the new Constitution. However, it’s applications is limited to the Federal government. As soon as the war ends will it be fully implemented (Austria-Hungary).
1918[]
Lenin proclaiming the Russian Socialist State
- Ongoing events
- Mexican Revolution
- World War I
- Arab Revolt
- Russia Revolution. Proclamation of the Republic.
- Russian Civil War
- Capture of Baghdad
- Extraordinary Pan-American Conference
- USA enters World War I
- March - Russian revolution. Czar Nicholas abdicates due to pressure from the rebellious parts of the army and internal front (workers strike and peasants revolts).
- March - Installation of the Provisional Government calls for elections of all of Russian Constituent Assembly and vows to continue the war on Germany.
- June-July - German occupation of the Baltic countries, Ukraine and Belarus by Germany. Proclamation of puppet states by Germany
- July - Georgia, Azerbaijan and Armenia proclaim their independence from Russia
- 11 October - Mayagüez (Puerto Rico) and other adjacent towns are nearly destroyed by a 7.5 earthquake and a tsunami. (OTL)
- October - Russia, overthrown by the Provisional Government. The Socialist Republic proclaimed
- November - Azerbaijan, Georgia and Armenia form the Transcaucasian Federation and set the capital as Tbilisi. Invasion by the Ottoman Army
- November - Finland proclaims independence
- December - Transcaucasian Federation dissolved. Each of the 3 republics negotiates cease fire with the Ottoman Army
- December - Peace Treaty between the Ottoman Empire and Azerbaijan, Georgia and Armenia.
1919[]
- Ongoing events
- Mexican Revolution
- World War I
- Arab Revolt
- Russian Civil War
- Polish War of Independence
- Ukrainian War of Independence
- January - Turkestani socialists proclaim independence from Russia as the Socialist Republic of Turkestan.
- January - Estonia, Latvia and Lithuania proclaim their independence from Russia.
- 1 March - Constitution of Uruguay. Establishes semi-collective executive power (President and National Council of Administration) (OTL).
- 1 March - Movement manifestation in Joseon.
- March - Start of the Polish War of Independence.
- April - The Red Army reoccupies Ukraine and Belarus (marks the beginning of the Ukrainian War of Independence).
- April - Proclamation of Ukraine SSR and Belarus SSR.
- July - Declaration of the Moldavian Democratic Republic in Bessarabia. Months later votes to unite with the Kingdom of Romania.
- August - Proclamation of the Federal Socialist Republic of Turkestan and independence from Russia.
1920[]
- Ongoing events
- end of Mexican Revolution
- end of World War I
- Russian Civil War ends by 1920
- Polish War of Independence
- End of the Ukrainian War of Independence
- Irish War of Independence
- Beginning of Anatolian or Turkish Civil War
- United Provinces of China, South Chinese Republic and State of Yunnan are established as independent states.
- January - Puerto Rico becomes a Commonwealth associated to the United States.
- January - The ABC Alliance (South Alliance) formalized, has a permanent agreement by Argentina, Brazil, Chile and Uruguay
- May - Armistice (World War I ends)
- May - Proclamation of the Polish Republic
- May - The Polish Revolutionary Committee (Polrewkom) under the assistance of the Red Army, proclaims the People's Republic of Poland
- May - Proclamation of the Arab Kingdom of Syria under Faisal I and establishment of the Confederation of Arab States
- June - The Proclamation of the Federal State of Austria-Hungary by the Emperor-King in joint session with the Federal Parliament. Issue for voting of the State and Federal Elections.
- June - Start of Paris Peace Conference
- 17 June - British general election, triumph of the liberal-conservative coalition under Lloyd-George.
- 25 June - Declaration of Independence by Ireland (Irish War of Independence)
- July - Red army enters Transcaucasia
- August - Treaty of Versailles (UK, France, Japan, Italy, Belgium, Netherlands and USA with Germany)
- August - Treaty of Lucerne (UK, France, Italy, Greece with Ottoman Empire) and partition of Ottoman Empire. Creates new policies: International Straits Zone, Ionia, Lycia, and Cilicia.
- August - Proclamation of the SSRs of Georgia, Azerbaijan and Armenia
- August - Recognition of the Confederation of Arab States
- August - A series of Baltic peace treaties are signed (Lithuania, Estonia and Latvia, Russia, Belarus and Ukraine)
- September - Compromise of Warsaw (Germany and Poland) and Status of East Prussia.
- September - Treaty of Ravenna (Italy, Serbia, Austria-Hungary, UK, France).
- September - Army uprising in Eskişehir and Konya marking the start of the Anatolian or Turkish Civil War
- 2 November - 1920 US Election: Republican Leonard Wood elected.
- 16 December - Haiyuan Earthquake (OTL)
1921[]
- Ongoing events
- Irish War of Independence
- Polish War of Independence
- Anatolian or Turkish Civil War
- Establishment of the Irish Free State
- Tripartite Agreement of Friendship, Commerce and Consular Relations signed by the South Chinese Republic, the State of Yunnan and the United Provinces of China.
- Government of India Act (1921), first proposal to give some form of internal autonomy to the Indian colony by the United Kingdom.
- Union of Costa Rica, El Salvador, Guatemala, Honduras and Nicaragua into the Federal Republic of Central America.
- Creation of the International Agrarian Bureau (IAB) in Cluj (Austria-Hungary)
- March - Republican Leonard Wood is inaugurated as the 29th President of the United States.
- March - proclamation of the Transcaucasian FSR
- September - First Assembly meeting of the League of Nations
- September - the People's Republic of Poland is dissolved
1922[]
- Ongoing events
- End of Anatolian or Turkish Civil War
- End of Irish War of Independence
- Arbitration of USA and South Alliance for the Tacna-Arica dispute
- Pan-American Conference in Santiago de Chile
- Establishment of the Republic of Turkey
- Signing of the Anglo-Irish Treaty that ends the Irish War of Independence
- 4 December - The British Parliament approves the Government of Ireland Act. Applied only in Northern Ireland, because of the Irish War of Independence.
1923[]
- Failed coup in Belarus of Social Revolutionaries (SR) and Left Social Revolutionaries (Left SR)
- March - Russia, Ukraine, Belarus and Transcaucasia establish the Federation of Socialist Republics
- Proclamation of the Afghan Democratic Republic.
- 18 June – Mount Etna erupts in Italy, making 60,000 homeless (OTL)
- 1 September - Great Kantō earthquake (OTL)
- The Government of Northern Ireland Act (1923) establishes Northern Ireland
| ||||||||||||||||||||||||||